dyld-96.2.tar.gz

[apple/dyld.git] / unit-tests / test-cases / dlclose-terminator-dlclose / foo.c

/*
 * Copyright (c) 2007 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
#include <stddef.h>
#include <dlfcn.h>


// <rdar://problem/5366233> Leopard (9a499): dyld crash with recursive calls to dlclose()

static void* handle = NULL;

static void __attribute__((constructor)) myinit()
{
	handle = dlopen("libbar.dylib", RTLD_LAZY);
}

static void __attribute__((destructor)) myterm()
{
	// myterm() is called within dlclose.
	// now call dlclose() on another (chainded dylib) to test dlclose is re-entrant
	if ( handle != NULL )
		dlclose(handle);
}


int foo()
{
	return 10;
}